Remove the silicon end cap, unclip the battery cover, and insert the two alkaline batteries supplied. Please note that the terminal with a spring is the negative terminal of the battery. Make sure that the cover is fitted properly, for it is also a safety switch to prevent high voltage electricity from leaking out. No current will flow if the cover is not fitted properly.

Operation:

Press and hold the only button gently for about three seconds to switch on the unit, as indicated by the green LED. This time delay is to prevent the unit from being switched on accidentally by the user or by children. Press the button once to switch the unit off.
The two alkaline batteries should last 6 hours. Replace with new alkaline batteries when the LED indicator light becomes dimmed.